MailService does not read SMTP password from extension

There are two problems:

1) Documentation let think that property names used to set user and password are "user" and "password", then "mail.user" and "mail.password". Finally, one should use "mail.user" and "mail.smtp.password".

2) MailService does not retrieve the password that appears to be null when breaking in javax.mail.Service.connect(...) line 200.